AirHint found the following cheapest return flights from London (LON) to Seoul (ICN) in July 2025 (see full year).

Return flights

07 Jul - 13 Jul	easyJet
03 Jul - 19 Jul	Ryanair
03 Jul - 07 Jul	Air India
08 Jul - 22 Jul	Ryanair
03 Jul - 12 Jul	Ryanair
02 Jul - 17 Jul	Ryanair
03 Jul - 17 Jul	Ryanair
09 Jul - 19 Jul	Ryanair
03 Jul - 11 Jul	Ryanair
02 Jul - 18 Jul	Ryanair
08 Jul - 05 Aug	Ryanair
06 Jul - 08 Aug	Air China
08 Jul - 04 Aug	Air China
08 Jul - 11 Aug	China Eastern
05 Jul - 02 Aug	Ryanair
08 Jul - 08 Aug	Air China
09 Jul - 08 Aug	Air China
23 Jul - 23 Aug	Ryanair
22 Jul - 04 Aug	Scandinavian Airlines
23 Jul - 28 Aug	Ryanair

Also check the deals for one-way flights from London to Seoul in July.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from London to Seoul in July from $692

Return flights